/*
 * MIT License
 *
 * Copyright (c) 2023 北京凯特伟业科技有限公司
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */
package com.je.bpm.engine.impl.interceptor;

import com.je.bpm.engine.impl.cfg.TransactionContext;
import com.je.bpm.engine.impl.cfg.TransactionContextFactory;
import com.je.bpm.engine.impl.context.Context;

/**
 * 命令事务上下文拦截器
 */
public class TransactionContextInterceptor extends AbstractCommandInterceptor {

    protected TransactionContextFactory transactionContextFactory;

    public TransactionContextInterceptor() {
    }

    public TransactionContextInterceptor(TransactionContextFactory transactionContextFactory) {
        this.transactionContextFactory = transactionContextFactory;
    }
    
    @Override
    public <T> T execute(CommandConfig config, Command<T> command) {
        CommandContext commandContext = Context.getCommandContext();
        // Storing it in a variable, to reference later (it can change during command execution)
        boolean isReused = commandContext.isReused();
        try {
            if (transactionContextFactory != null && !isReused) {
                TransactionContext transactionContext = transactionContextFactory.openTransactionContext(commandContext);
                Context.setTransactionContext(transactionContext);
                commandContext.addCloseListener(new TransactionCommandContextCloseListener(transactionContext));
            }
            return next.execute(config, command);
        } finally {
            if (transactionContextFactory != null && !isReused) {
                Context.removeTransactionContext();
            }
        }

    }

    public TransactionContextFactory getTransactionContextFactory() {
        return transactionContextFactory;
    }

    public void setTransactionContextFactory(TransactionContextFactory transactionContextFactory) {
        this.transactionContextFactory = transactionContextFactory;
    }

}
